EP0474471A3 - Fixed frequency single ended forward converter switching at zero voltage - Google Patents
Fixed frequency single ended forward converter switching at zero voltage Download PDFInfo
- Publication number
- EP0474471A3 EP0474471A3 EP19910308081 EP91308081A EP0474471A3 EP 0474471 A3 EP0474471 A3 EP 0474471A3 EP 19910308081 EP19910308081 EP 19910308081 EP 91308081 A EP91308081 A EP 91308081A EP 0474471 A3 EP0474471 A3 EP 0474471A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- zero voltage
- fixed frequency
- single ended
- forward converter
- converter switching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33561—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having more than one ouput with independent control
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/01—Resonant DC/DC converters
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/579,470 US5126931A (en) | 1990-09-07 | 1990-09-07 | Fixed frequency single ended forward converter switching at zero voltage |
| US579470 | 1990-09-07 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0474471A2 EP0474471A2 (en) | 1992-03-11 |
| EP0474471A3 true EP0474471A3 (en) | 1992-05-27 |
| EP0474471B1 EP0474471B1 (en) | 1996-05-29 |
Family
ID=24317034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91308081A Expired - Lifetime EP0474471B1 (en) | 1990-09-07 | 1991-09-04 | Fixed frequency single ended forward converter switching at zero voltage |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5126931A (en) |
| EP (1) | EP0474471B1 (en) |
| DE (1) | DE69119848T2 (en) |
Families Citing this family (96)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE36098E (en) * | 1982-02-04 | 1999-02-16 | Vlt Corporation | Optimal resetting of the transformer's core in single-ended forward converters |
| US5448469A (en) * | 1990-02-15 | 1995-09-05 | Deutsche Thomson-Brandt Gmbh | Switch mode power supply with output feedback isolation |
| US5231563A (en) * | 1990-09-07 | 1993-07-27 | Itt Corporation | Square wave converter having an improved zero voltage switching operation |
| US5173846A (en) * | 1991-03-13 | 1992-12-22 | Astec International Ltd. | Zero voltage switching power converter |
| JP3199423B2 (en) * | 1991-11-01 | 2001-08-20 | オリジン電気株式会社 | Resonant type forward converter |
| JP3419797B2 (en) * | 1992-01-10 | 2003-06-23 | 松下電器産業株式会社 | Switching power supply |
| EP0559928B1 (en) * | 1992-03-09 | 1996-10-23 | Siemens Aktiengesellschaft | Switching DC-DC converter |
| US5224025A (en) * | 1992-04-21 | 1993-06-29 | Wisconsin Alumni Research Foundation | Forward converter with two active switches and unity power factor capability |
| DE4313359A1 (en) * | 1992-04-24 | 1993-10-28 | Matsushita Electric Ind Co Ltd | Switched mode power supply - has two switches in series and in parallel with DC voltage source, operating alternately on control signal actuation |
| US5325283A (en) * | 1992-06-08 | 1994-06-28 | Center For Innovative Technology | Novel zero-voltage-switching family of isolated converters |
| US5341278A (en) * | 1992-08-20 | 1994-08-23 | Brooks Steven W | Switching pulsed resonant DC-DC converter power amplifier |
| DE4328458B4 (en) * | 1992-08-25 | 2005-09-22 | Matsushita Electric Industrial Co., Ltd., Kadoma | Switching power supply |
| US5327333A (en) * | 1992-11-25 | 1994-07-05 | At&T Bell Laboratories | Push push DC-DC reduced/zero voltage switching converter with off-set tapped secondary winding |
| US5402329A (en) * | 1992-12-09 | 1995-03-28 | Ernest H. Wittenbreder, Jr. | Zero voltage switching pulse width modulated power converters |
| US5363289A (en) * | 1992-12-15 | 1994-11-08 | At&T Bell Laboratories | Control apparatus for limiting voltage on a core reset capacitor |
| EP0602835B1 (en) * | 1992-12-15 | 1996-05-01 | AT&T Corp. | Voltage control circuits |
| US5521807A (en) * | 1992-12-31 | 1996-05-28 | Interpoint Corporation | DC-To-DC converter with secondary flyback core reset |
| US5434768A (en) * | 1993-02-12 | 1995-07-18 | Rompower | Fixed frequency converter switching at zero voltage |
| EP0613232B1 (en) * | 1993-02-24 | 1997-04-23 | Siemens Aktiengesellschaft | Flyback converter power supply with a semi-conductor switch of low resistance voltage |
| US5490055A (en) * | 1993-03-03 | 1996-02-06 | At&T Corp. | Multiloop feedback control apparatus for DC/DC converters with frequency-shaping band pass current control |
| ES2056747B1 (en) * | 1993-03-31 | 1997-10-16 | Alcatel Standard Electrica | CONTINUOUS-CONTINUOUS CONVERSION CIRCUIT. |
| US5625541A (en) * | 1993-04-29 | 1997-04-29 | Lucent Technologies Inc. | Low loss synchronous rectifier for application to clamped-mode power converters |
| US5303138A (en) * | 1993-04-29 | 1994-04-12 | At&T Bell Laboratories | Low loss synchronous rectifier for application to clamped-mode power converters |
| US5450029A (en) * | 1993-06-25 | 1995-09-12 | At&T Corp. | Circuit for estimating a peak or RMS value of a sinusoidal voltage waveform |
| US5391976A (en) * | 1993-07-28 | 1995-02-21 | At&T Corp. | Power factor control arrangement for an OLS based on quarter cycle averaged power flow |
| US5457620A (en) * | 1993-07-30 | 1995-10-10 | At&T Ipm Corp. | Current estimating circuit for switch mode power supply |
| US5831838A (en) * | 1993-08-16 | 1998-11-03 | Avionics Instruments, Inc. | Resonant fly-forward converter circuit |
| US5446366A (en) * | 1994-02-08 | 1995-08-29 | Computer Products, Inc. | Boost converter power supply with reduced losses, control circuit and method therefor |
| US5570278A (en) * | 1994-02-25 | 1996-10-29 | Astec International, Ltd. | Clamped continuous flyback power converter |
| US5796595A (en) * | 1994-02-25 | 1998-08-18 | Astec International Limited | Interleaved continuous flyback power converter system |
| US5612862A (en) * | 1994-05-06 | 1997-03-18 | Alcatel Network Systems, Inc. | Method and circuitry for controlling current reset characteristics of a magnetic amplifier control circuit |
| ES2105957B1 (en) * | 1994-12-30 | 1998-06-01 | Alcatel Standard Electrica | CONTINUOUS-CONTINUOUS ENERGY MULTI-OUTPUT CONVERTER. |
| EP1278295A3 (en) | 1995-01-17 | 2004-12-29 | VLT, Inc. | Control of stored magnetic energy in power converter transformers |
| US5712772A (en) * | 1995-02-03 | 1998-01-27 | Ericsson Raynet | Controller for high efficiency resonant switching converters |
| US5694304A (en) * | 1995-02-03 | 1997-12-02 | Ericsson Raynet Corporation | High efficiency resonant switching converters |
| TW291620B (en) * | 1995-05-10 | 1996-11-21 | Philips Electronics Nv | |
| US5638260A (en) * | 1995-05-19 | 1997-06-10 | Electronic Measurements, Inc. | Parallel resonant capacitor charging power supply operating above the resonant frequency |
| US5590032A (en) | 1995-05-25 | 1996-12-31 | Lucent Technologies Inc. | Self-synchronized drive circuit for a synchronous rectifier in a clamped-mode power converter |
| US5631822A (en) * | 1995-08-24 | 1997-05-20 | Interpoint Corporation | Integrated planar magnetics and connector |
| US5663876A (en) * | 1995-09-25 | 1997-09-02 | Lucent Technologies Inc. | Circuit and method for achieving zero ripple current in the output of a converter |
| US5652700A (en) * | 1995-10-16 | 1997-07-29 | Computer Products, Inc. | Low cost AC-to-DC converter having input current with reduced harmonics |
| US5600546A (en) * | 1995-10-16 | 1997-02-04 | Computer Products, Inc. | Input harmonic current corrected AC-to-DC converter with multiple coupled primary windings |
| US5754416A (en) * | 1995-10-31 | 1998-05-19 | Samsung Electro-Mechanics Co., Ltd. | Single soft switching circuit for power supply |
| JP3512540B2 (en) * | 1995-11-22 | 2004-03-29 | オリジン電気株式会社 | Switching power supply and control method thereof |
| US5875103A (en) * | 1995-12-22 | 1999-02-23 | Electronic Measurements, Inc. | Full range soft-switching DC-DC converter |
| US5754413A (en) * | 1996-02-23 | 1998-05-19 | Lucent Technologies Inc. | Reduced voltage stress asymmetrical DC-to-DC converter using first and second transformers having differing turns ratios |
| US5781420A (en) * | 1996-07-18 | 1998-07-14 | International Power Devices, Inc. | Single ended forward DC-to-DC converter providing enhanced resetting for synchronous rectification |
| US5973939A (en) * | 1996-08-29 | 1999-10-26 | Trw Inc. | Double forward converter with soft-PWM switching |
| US5808879A (en) * | 1996-12-26 | 1998-09-15 | Philips Electronics North America Corporatin | Half-bridge zero-voltage-switched PWM flyback DC/DC converter |
| US7269034B2 (en) | 1997-01-24 | 2007-09-11 | Synqor, Inc. | High efficiency power converter |
| US5838552A (en) * | 1997-04-01 | 1998-11-17 | Lucent Technologies Inc | Asymmetrical power converter and method of operation thereof |
| US6038146A (en) * | 1997-06-13 | 2000-03-14 | Computer Products, Incorporated | High power factors, single stage harmonics correction converter |
| KR100455651B1 (en) * | 1997-08-08 | 2005-01-17 | 삼성전자주식회사 | Multi-output dc/dc voltage converting apparatus and liquid crystal display, including multi-output dc/dc voltage converter for generating main power through choke system and auxiliary power through flyback system |
| US6081432A (en) | 1998-05-26 | 2000-06-27 | Artesyn Technologies, Inc. | Active reset forward converter employing synchronous rectifiers |
| US6069802A (en) * | 1998-07-31 | 2000-05-30 | Priegnitz; Robert A. | Transformer isolated driver and isolated forward converter |
| CA2270816C (en) | 1999-05-03 | 2003-12-23 | Argus Technologies Ltd. | Zero voltage switching buck derived converter |
| US6304463B1 (en) | 1999-05-07 | 2001-10-16 | Power-One, Inc. | Single-ended forward converter circuit with quasi-optimal resetting for synchronous rectification |
| EP1069675A1 (en) * | 1999-07-15 | 2001-01-17 | MAGNETEK S.p.A. | Rectifier |
| US6282107B1 (en) * | 2000-03-07 | 2001-08-28 | Vlt Corporation | Integrated sense and switch circuitry for transformer core resetting |
| EP1225680B1 (en) * | 2001-01-22 | 2009-11-11 | STMicroelectronics S.r.l. | Switched mode power supply |
| US6545883B2 (en) | 2001-05-07 | 2003-04-08 | Artesyn Technologies, Inc. | Integrated boost-asymmetrical half-bridge converter |
| WO2003055051A2 (en) | 2001-12-21 | 2003-07-03 | Delta Energy Systems (Switzerland) Ag | A forward converter with controlled reset |
| US6538906B1 (en) * | 2002-02-11 | 2003-03-25 | Delta Electronics, Inc. | Energy storage circuit for DC-DC converter |
| US7009850B2 (en) | 2002-04-12 | 2006-03-07 | Det International Holding Limited | Soft switching converter using current shaping |
| WO2004036726A1 (en) * | 2002-10-21 | 2004-04-29 | Sanken Electric Co., Ltd. | Dc converter |
| JP4111220B2 (en) * | 2003-07-16 | 2008-07-02 | サンケン電気株式会社 | DC converter |
| WO2005015725A1 (en) * | 2003-08-11 | 2005-02-17 | Sanken Electric Co., Ltd. | Switching power supply device |
| US7095638B2 (en) * | 2003-09-03 | 2006-08-22 | Tyco Electronics Power Systems, Inc. | Controller for complementary switches of a power converter and method of operation thereof |
| JP5162982B2 (en) * | 2007-07-13 | 2013-03-13 | 富士電機株式会社 | Switching power supply |
| US8169796B2 (en) * | 2007-12-21 | 2012-05-01 | Murata Manufacturing Co., Ltd. | Isolated switching power supply apparatus |
| JP5770412B2 (en) * | 2008-01-31 | 2015-08-26 | ダイキン工業株式会社 | Power converter |
| US20110157919A1 (en) * | 2009-12-30 | 2011-06-30 | Yeshoda Yedevelly | Vcc generator for switching regulator |
| US9343971B2 (en) * | 2009-12-30 | 2016-05-17 | Silicon Laboratories Inc. | Synchronous VCC generator for switching voltage regulator |
| KR20110138068A (en) * | 2010-06-18 | 2011-12-26 | 페어차일드코리아반도체 주식회사 | Powerfactor compensation converter and driving method thereof |
| US8593830B2 (en) * | 2010-06-29 | 2013-11-26 | Maxim Integrated Products, Inc. | Reverse current limit protection for active clamp converters |
| JP5552949B2 (en) * | 2010-08-03 | 2014-07-16 | 株式会社豊田自動織機 | Active clamp type DCDC converter |
| US8520410B2 (en) | 2010-11-09 | 2013-08-27 | Flextronics Ap, Llc | Virtual parametric high side MOSFET driver |
| US8743565B2 (en) * | 2012-07-27 | 2014-06-03 | Flextronics Ap, Llc | High power converter architecture |
| EP2693620A2 (en) * | 2012-08-03 | 2014-02-05 | Samsung Electro-Mechanics Co., Ltd. | Single stage forward-flyback converter and power supply apparatus |
| US9605860B2 (en) | 2012-11-02 | 2017-03-28 | Flextronics Ap, Llc | Energy saving-exhaust control and auto shut off system |
| US9660540B2 (en) | 2012-11-05 | 2017-05-23 | Flextronics Ap, Llc | Digital error signal comparator |
| US9323267B2 (en) | 2013-03-14 | 2016-04-26 | Flextronics Ap, Llc | Method and implementation for eliminating random pulse during power up of digital signal controller |
| US9494658B2 (en) | 2013-03-14 | 2016-11-15 | Flextronics Ap, Llc | Approach for generation of power failure warning signal to maximize useable hold-up time with AC/DC rectifiers |
| US9490651B2 (en) | 2013-03-15 | 2016-11-08 | Flextronics Ap, Llc | Sweep frequency mode for magnetic resonant power transmission |
| US10199950B1 (en) | 2013-07-02 | 2019-02-05 | Vlt, Inc. | Power distribution architecture with series-connected bus converter |
| US9077254B2 (en) * | 2013-07-12 | 2015-07-07 | Solantro Semiconductor Corp. | Switching mode power supply using pulse mode active clamping |
| US20160094132A1 (en) * | 2014-04-08 | 2016-03-31 | Marco Antonio Davila | Optimum Offline Converter Control Using Intelligent Power Processing |
| FR3020523B1 (en) * | 2014-04-29 | 2016-05-06 | Valeo Systemes De Controle Moteur | ELECTRICAL POWER SUPPLY AND METHOD FOR CONTROLLING AN ELECTRIC POWER SUPPLY |
| DE102014208880B4 (en) * | 2014-05-12 | 2016-09-01 | Continental Automotive Gmbh | Driver circuit for an inductance and active transmitting device with a driver circuit |
| GB2534348A (en) * | 2014-11-21 | 2016-07-27 | Reinhausen Maschf Scheubeck | Active Snubber |
| US9673718B2 (en) | 2015-05-07 | 2017-06-06 | Infineon Technologies Austria Ag | Voltage conversion method and voltage converter |
| US10651748B2 (en) | 2017-10-12 | 2020-05-12 | Rompower Technology Holdings, Llc | Energy recovery from the leakage inductance of the transformer |
| US10972014B2 (en) | 2017-10-12 | 2021-04-06 | Rompower Technology Holdings, Llc | High efficiency passive clamp |
| IL255948A (en) * | 2017-11-27 | 2018-01-31 | Abramovici Tal | Constant frequency dc/dc power converter |
| TWI732581B (en) * | 2020-06-03 | 2021-07-01 | 亞源科技股份有限公司 | Conversion device with oscillation reduction control and method of operation of oscillation reduction control the same |
| DE102021201103A1 (en) | 2021-02-05 | 2022-08-11 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein | DC VOLTAGE CONVERTER |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0058400A2 (en) * | 1981-02-17 | 1982-08-25 | Kabushiki Kaisha Toshiba | High frequency switching circuit |
| WO1983002858A1 (en) * | 1982-02-04 | 1983-08-18 | Vicor Corp | Optimal resetting of the transformer's core in single ended forward converters |
| US4809148A (en) * | 1987-10-21 | 1989-02-28 | British Columbia Telephone Company | Full-fluxed, single-ended DC converter |
| US4931716A (en) * | 1989-05-05 | 1990-06-05 | Milan Jovanovic | Constant frequency zero-voltage-switching multi-resonant converter |
| US4959764A (en) * | 1989-11-14 | 1990-09-25 | Computer Products, Inc. | DC/DC converter switching at zero voltage |
| US4975821A (en) * | 1989-10-10 | 1990-12-04 | Lethellier Patrice R | High frequency switched mode resonant commutation power supply |
Family Cites Families (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3582758A (en) * | 1969-09-30 | 1971-06-01 | Ibm | Rectifier using low saturation voltage transistors |
| US3940682A (en) * | 1973-10-15 | 1976-02-24 | General Electric Company | Rectifier circuits using transistors as rectifying elements |
| US3909700A (en) * | 1974-01-18 | 1975-09-30 | Gen Electric | Monolithic semiconductor rectifier circuit structure |
| CA1069177A (en) * | 1976-07-21 | 1980-01-01 | Gte Lenkurt Electric (Canada) Ltd. | Constant current series-switching regulator |
| US4246634A (en) * | 1979-03-07 | 1981-01-20 | Ann Arbor Terminals, Inc. | Start-up circuit for switch mode power supply |
| US4323962A (en) * | 1981-02-02 | 1982-04-06 | General Electric Company | High efficiency rectifier with multiple outputs |
| JPS57138868A (en) * | 1981-02-17 | 1982-08-27 | Toshiba Corp | Voltage resonance type high frequency switching circuit |
| US4415959A (en) * | 1981-03-20 | 1983-11-15 | Vicor Corporation | Forward converter switching at zero current |
| US4386394A (en) * | 1981-05-20 | 1983-05-31 | General Electric Company | Single phase and three phase AC to DC converters |
| US4451876A (en) * | 1981-06-19 | 1984-05-29 | Hitachi Metals, Ltd. | Switching regulator |
| US4519024A (en) * | 1983-09-02 | 1985-05-21 | At&T Bell Laboratories | Two-terminal transistor rectifier circuit arrangement |
| US4680687A (en) * | 1984-08-07 | 1987-07-14 | Siemens Aktiengesellschaft | Switch-mode power supply having a free-running forward converter |
| US4716514A (en) * | 1984-12-13 | 1987-12-29 | Unitrode Corporation | Synchronous power rectifier |
| EP0189680B1 (en) * | 1984-12-28 | 1993-02-10 | Kabushiki Kaisha Toshiba | Stabilizing power source apparatus |
| DE3672847D1 (en) * | 1985-02-12 | 1990-08-30 | Hitachi Metals Ltd | DC CONVERTER. |
| US4648020A (en) * | 1985-02-26 | 1987-03-03 | Vicor Corporation | Power booster switching at zero current |
| US4642743A (en) * | 1985-08-05 | 1987-02-10 | International Business Machines Corp. | Power supplies with magnetic amplifier voltage regulation |
| US4675797A (en) * | 1985-11-06 | 1987-06-23 | Vicor Corporation | Current-fed, forward converter switching at zero current |
| US4709316A (en) * | 1985-12-27 | 1987-11-24 | General Electric Company | Single-ended DC-to-DC converter with lossless switching |
| US4760512A (en) * | 1986-06-11 | 1988-07-26 | American Telephone And Telegraph Company, At&T Bell Laboratories | Circuit for reducing transistor stress and resetting the transformer core of a power converter |
| US4858052A (en) * | 1986-11-28 | 1989-08-15 | Ro Associates | Method and means for protecting converter circuits |
| FR2608857B1 (en) * | 1986-12-19 | 1989-05-12 | Sodilec Sa | CONTINUOUS-CONTINUOUS CONVERTER OF THE “FORWARD” TYPE WITH ZERO CURRENT SWITCHING AND BIDIRECTIONAL CURRENT OPERATION |
| KR890702327A (en) * | 1987-10-29 | 1989-12-23 | 원본미기재 | Zero Voltage Switching DC-AC Inverter or Converter |
| US4837452A (en) * | 1988-10-19 | 1989-06-06 | Spectra-Physics, Inc. | Off-line dc power supply |
| US4922404A (en) * | 1989-03-15 | 1990-05-01 | General Electric Company | Method and apparatus for gating of synchronous rectifier |
| US4931920A (en) * | 1989-06-16 | 1990-06-05 | Ncr Corporation | Circuit and method for regulating output voltage of a switch mode power supply having a current mode magnetic amplifier |
-
1990
- 1990-09-07 US US07/579,470 patent/US5126931A/en not_active Expired - Fee Related
-
1991
- 1991-09-04 DE DE69119848T patent/DE69119848T2/en not_active Expired - Lifetime
- 1991-09-04 EP EP91308081A patent/EP0474471B1/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0058400A2 (en) * | 1981-02-17 | 1982-08-25 | Kabushiki Kaisha Toshiba | High frequency switching circuit |
| WO1983002858A1 (en) * | 1982-02-04 | 1983-08-18 | Vicor Corp | Optimal resetting of the transformer's core in single ended forward converters |
| US4809148A (en) * | 1987-10-21 | 1989-02-28 | British Columbia Telephone Company | Full-fluxed, single-ended DC converter |
| US4931716A (en) * | 1989-05-05 | 1990-06-05 | Milan Jovanovic | Constant frequency zero-voltage-switching multi-resonant converter |
| US4975821A (en) * | 1989-10-10 | 1990-12-04 | Lethellier Patrice R | High frequency switched mode resonant commutation power supply |
| US4959764A (en) * | 1989-11-14 | 1990-09-25 | Computer Products, Inc. | DC/DC converter switching at zero voltage |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0474471A2 (en) | 1992-03-11 |
| EP0474471B1 (en) | 1996-05-29 |
| DE69119848T2 (en) | 1997-01-16 |
| DE69119848D1 (en) | 1996-07-04 |
| US5126931A (en) | 1992-06-30 |
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